Amino acids:
A) are composed of a central carbon surrounded by an amino group, a carboxyl group, a hydrogen atom, and a variable side chain
B) can have side chains that are polar, nonpolar, or with unique properties
C) can form peptide bonds
D) all of these statements are true
Ans: D) all of these statements are true
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Which of the following genera is photosynthetic using bacteriochlorophyll g?
A. Heliobacterium B. Clostridium C. Veillonella D. Caryophanon
One example of a simple reflex arc involves the
a. contraction of a muscle when it is stretched. b. conscious message to move part of the body. c. receptor, the brain, and the effector. d. muscle action in a salute when a noncommissioned combatant sees an officer. e. contraction of an antagonistic muscle when its opposite muscle relaxes.
Down syndrome is an example of a __________ condition
a. monosomic b. disomic c. trisomic d. polyploid e. transgenic
Which one of the following is not a difference between organic and inorganic compounds?
A. Organic compounds are generally much larger than inorganic compounds. B. Organic compounds contain carbon atoms bonded to one another. C. Organic compounds are found in living things and inorganic compounds are not. D. Organic compounds are often polymers while inorganic compounds are not.